The KI-XR2 Ethernet Relay Controller is typically connected to an existing local area network to allow computer control of connected sound and light signaling devices. The KI-XR2 is a digital device housed in a waterproof enclosure which controls two on board solid state relays via Ethernet connection to Microsoft Windows based computer control software. Customized configuration software is supplied for configuration and connection of the Ethernet relay controller to the network. Additional Software is provided for remote relay control, which includes customer desired switching functions and/or timer functions as part of a custom designed user interface. This user interface “window” resides on a Windows PC desktop to control the supplied Kahlenberg Signaling devices and/or other devices connected to the relay outputs.